Finding the Fourth Proportional to 113,480.86, 156,631.17 and 65,726.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,480.86 : 156,631.17 = 65,726.50 : x
2. Step 2: Convert to fraction form
   113,480.86/156,631.17 = 65,726.50/x
3. Step 3: Cross multiply
   113,480.86x = 156,631.17 × 65,726.50
4. Step 4: Simplify right side
   113,480.86x = 10,294,818,595.01
5. Step 5: Solve for x
   x = 10,294,818,595.01/113,480.86
6. Step 6: Final answer
   x = 90,718.55